Des Moines Public Safety Officer 911 - Click on and listen to police and fire radio traffic on your computer's audio system. The service runs 24 hours a day, 7 days a week. Our combined police and fire dispatch center processes over 650,000 calls for service every year resulting in 250,000 trips. Close to 70,000 actual police and fire cases are generated. http://www.dmpso911.com/